(3GdMbhb GdSjGSjI ddeQCI aj GdESdGe eY GdebGQfI HGdCfXeI GdOSJhQjI GdMOjKI (B/s - (3GdThGQHj, YHO GdMejO eMeOs ((3GdEScfOQjI, eUQ (B:s (3efTCI GdeYGQa,s, 1987)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
(3HHdjhLQGajI (B: (3U(B. 263-284.s
Keywords: (3GdeQCI GdeSdeIs; (3GdESdGe hGdeQCIs; (3GdeQCI aj GdSjGSIs